Whittier (CA) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Whittier.
Climate overview of Whittier
Whittier, California, United States of America, experiences significant temperature variation throughout the year. Summers bring daytime highs of 32°C (90°F) in August, while winters cool to 20°C (68°F) in December.
Rainfall is modest, totalling around 272 mm (11 in) annually. The city experiences a distinct dry season from March to November, with very warm summers and pleasant winters. December tends to be the wettest month. The sunniest month is July, with 12.1 hours of sunshine per day on average.
Whittier Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Whittier - and find the best time to visit.
Monthly Temperature in Whittier
Depending on the time of the year, temperatures range from very warm to pleasant in Whittier. Average maximum daytime temperatures range from a very warm 32°C (90°F) in August, the warmest time of the year, to a pleasant 20°C (68°F) during cooler months like December.
At night, you can expect temperatures ranging from 18°C (64°F) in August to around 8°C (46°F) during December.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Whittier
Whittier has a relatively dry climate with low precipitation, averaging 272 mm (11 in) of rainfall annually. Significant seasonal changes in precipitation occur throughout the year. In the wettest month, December it receives moderate rainfall, averaging 75 mm (3 in) of precipitation, recorded across 7 rainy days. In contrast, the driest month June brings less rainfall, with 0.2 mm (0.01 in) over 0 rainy days. For more details, please visit our Whittier Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Whittier
Seasonal changes in sunshine hours are quite dramatic in Whittier. While July receives considerable daily sunshine with up to 12.1 hours, November marks the darkest time of the year, where sunshine is scarce with only 7.2 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Whittier by Month
The relative humidity is high throughout the year in Whittier.
The city experiences its highest humidity in May, reaching 73%. In November, the humidity drops to its lowest level at 50%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Whittier
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: January, February, March, April, May, June, October, November and December
- Warmest weather: July, August and September
- Most sunshine: July and August
- Fewer rainy days: May, June, July, August and September
- Seasonal pattern: A distinct dry season from March to November, with very warm summers and pleasant winters
Frequently asked questions about the climate in Whittier
What is the best time to visit Whittier?
January, February, March, April, May, June, October, November and December typically offer the most optimal weather in Whittier. In contrast, July, August and September tend to have less optimal conditions. Whittier has a distinct dry season from March to November, with very warm summers and pleasant winters.
What temperatures can I expect in Whittier?
Daytime highs range from 20°C (68°F) in December to 32°C (90°F) in August. Nighttime lows range from 8°C (46°F) to 18°C (64°F). Temperatures vary considerably through the year.
How much rain does Whittier get?
Annual rainfall is around 272 mm (11 in). December is the wettest month with 75 mm (3 in), while June is the driest with 0.2 mm (0.01 in).
How sunny is Whittier?
Whittier receives around 3,257 hours of sunshine per year. July is the sunniest month with 364 hours, while November is the cloudiest with just 217 hours. Overall, Whittier enjoys abundant sunshine.
Whittier 3-Day Forecast
Whittier (CA) 3-Day Forecast
Whittier on the map
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